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Proceedings Paper

Magneto-optic data storage in the '90s
Author(s): Arnold W. Funkenbusch
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Paper Abstract

Introduction of rewritable optical drives and disks during the late 1980's expanded the range of data storage applications for which optical recording is a preferred technology. The high density and reliability intrinsic in optical recording are combined with the ability to erase and rewrite data as in magnetic recording. Since it does not require flying a magnetic head in proximity to the media surface, rewritable optical media is removable and the risk of damage by a head crash or multiple uses is eliminated. Data can be written, read, erased, and rewritten millions of times without damage. Magneto optic (MO) recording is used in rewritable optical drives/media due to the advantages in speed and durability it offers relative to other methods (phase change, physical changes in polymers). MO drives and media are now available from several companies worldwide. 3M is a major supplier of media (disks) which are produced at it's Vadnais Heights, Minnesota facility. Each media cartridge offers 650MBytes of removable data storage on a two sided 130mm disk.

Paper Details

Date Published: 1 March 1991
PDF: 10 pages
Proc. SPIE 1396, Applications of Optical Engineering: Proceedings of OE/Midwest '90, (1 March 1991); doi: 10.1117/12.25883
Show Author Affiliations
Arnold W. Funkenbusch, 3M Co. (United States)


Published in SPIE Proceedings Vol. 1396:
Applications of Optical Engineering: Proceedings of OE/Midwest '90

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